Window-ventilator.



B. A. SWASBY.

WINDOW VENTILATOR.-v APPLIGATION HLBD`MAY 12,1910.

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BENJAMIN A. SWASEY, OF PORTLAND, MAINE, ASSIGNOR OF ONE-HALF TO WILLIAM G. MCDONALD, OF PORTLAND, MAINE.

WINDOW-VENTILATOR.

Specification of Letters Patent. i Application filed May 12, 1910.

Patented Apr. 4, 1911. serial No, 560,921.

To all whom it may concern:

Be it known that I, BENJAMIN A. SwAsEY, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Vindow-Ventilators, of which the following is a specification, reference beingV had to the accompanying drawings.

This invention relates to ventilators for use in windows.

The object of the invention is to provide a simple and practical Ventilating device of this character which will be secured in a window frame beneath or above a sash and which will permit of perfect circulation of fresh air in the room without drafts and without permitting the entrance of dust, snow or rain.

l/Vith the above and other objects in View,

` the invention consists of the novel features of construction and the combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- Figure l is a view of the inside of a window frame showing the lower sash raised and my improved ventilator arranged beneath the upper sash; Fig. 2 is a vertical section through the parts shown in Fig. 1; Fig. 3 is a detail horizontal section taken on the irregular plane indicated by the line 3 3 in Fig. 1.

Referring more particularly to Figs. 1 to 3 inclusive of the drawings, 1 denotes a portion of a window frame having upper and lower sashes 2, 3 arranged for sliding movement between the usual guide or stop strips 4, 5, 6. 7 denotes one embodiment of my improved ventilator which is especially adapted to be used beneath the upper sash 2 when the lower sash 3 is raised, as shown in Figs. l and 2. Said ventilator 7 comprises a rectangular frame adapted to fit between the outer stop strips 4 and consisting of upper and lower bars 8, 9 united by vertical side bars 10. The opening in the frame is covered by a screen 11, preferably of ,woven wire suitably secured to the outer face of the frame. Arranged upon the inner face of the frame is a deflector consisting of two triangular side plates 12, an upwardly and inwardly inclined front plate 13 and a horizontal top plate 14. The side plates 12 are suitably secured to or formed integral f with the side bars 10 and their inner faces are preferably grooved to receive the side edges of the front plate 13, which latter is preferably made of glass or other transparent material but which may be made of sheet metal or any other material. The front plate 13 inclines upwardly and inwardly from the bottom bar 9 to the inner portion of the top plate 14, which latter projects inwardly from the bottom portion of the upper or top bar 8. In the top plate 14 is formed a longitudinal series of vertical openings 15 which permit fresh air to enter the room. Said openings 15 are so arranged that they are disposed immediately beneath the lower bar of the upper sash so that the latter may be used for closinothe openings 15 when it is desired to exclut e outside air from the room. In Fig. 2 of the drawings the lower sash 3 is shown in full lines in its elevated position so that fresh air from the outside of the building may enter the room through the openings l5, and in dotted lines the sash 3 is shown in its lowered position to close the openings 15. In the top face of the plate 14 is formed a longitudinal channel or groove 16 adapted to receive the bottom edge of the sash 3 so as to effectively close the openings 15. For the purpose of fastening the ventilator in the window so that it cannot be removed by anyone from the outside of the house or building, an adjustable fastening member' 17 secured centrally upon the inner face of the upper bar 8 is formed with an upwardly projecting spur 18 adapted to be forced into the bottom edge of the upper sash 2, as shown in Fig. 2. Said fastening member 17 is in the form of a metal plate bent angularly and having its upper end beveled in opposite directions to form the V-shaped spur 18 and its lower end formed with a slot 19 to receive a screw 20, whereby it is adjustably secured upon the bar 8. Upon the inner face of the lower corners of the bar 9 of the ventilator frame are secured two sliding bolts 21 which are adapted to be projected into engagement with the outer' stop strips 4, as shown in Figs. 1 and 3 to retain the lower part of the ventilator in the window frame.

In applying the ventilator to the window,

the lower sash 3 is raised and the ventilator is passed out of the'frame beneath the upper sash and its upper bar 8 is then brought into contact with the lower portion of said upper sash and then moved upwardly so that the spur 18 enters the bottom of said sash. The lower portion of the ventilator frame is then swung inwardly between the stop strips 4E and the bolts 21 are projected to their locking position shown in the drawings. Owing to the construction and arrangement of the fastening plate 17 and the fastening bolts 21, it will be seen that the ventilator may be readily adapted to window frames of any height having a width corresponding to that of the ventilator frame. The construction and arrangement of the air deflecting portion of the ventilator permits the entrance of fresh air into the room without producing annoying or dangerous drafts and at the same time enables the inlet of fresh air to be readily cut off by simply lowering the lower sash to cover the air inlet openings 15. The provision of the screen 11 prevents the entrance of flies and insects and the arrangement of the deflector prevents the entrance of dust, snow, rain, etc., into the room.

While l have shown and described what l now regard as the preferred embodiment of my invention, it will be understood that various changes in the form, proportion and minor details may be resorted towithout departing from kthe spirit or scope of the invention.

Having thus described the invention what is claimed is:

1. The combination with a window frame having sliding sashes, of a ventilator arin the window frame.

3. The combination with a window frame having sliding sashes,.of a ventilator ar-V ranged beneath one of the sashes and having` a screen covered opening and a deflecting portion provided with air inlet openings disposed beneath the other sash, where by the latter may close said air inlet openings, a spur upon the upper portion of the ventilator to engage the sash beneath which it is disposed, and fastenings upon the lower portion of the ventilator to engage the window frame.

l'n testimony whereof I hereunto aiiix my signature in the presence of two witnesses. Y BENJAMIN A. SWASEY.

Witnesses WILLIAM J. LUoAs, HARRY A. LUCAS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

